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DR. BENJAMIN NICHOLAS ANTON LARSEN DO
NPI 1780333690
Internal Medicine in Derby, CT

Active since March 20, 2022PECOS Enrolled
130 DIVISION ST, DERBY, CT 06418(203) 732-1330(203) 732-1332 Get Directions Write a Review

NPPES record last updated: June 11, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Benjamin Nicholas Anton Larsen Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. BENJAMIN NICHOLAS ANTON LARSEN DO (NPI 1780333690) is an individual internal medicine provider in Derby, Connecticut, licensed in Connecticut (84796) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1780333690
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. BENJAMIN NICHOLAS ANTON LARSENCredential: DO
Location Address130 DIVISION STDerby, CT 06418-1326
Mailing Address67 Maple AveDerby, CT 06418-1328
Phone(203) 732-1330
Fax(203) 732-1332
Sole ProprietorNo
Enumeration DateMarch 20, 2022
Last NPPES UpdateJune 11, 2026
NPPES CertifiedJune 11, 2026
✔ NPI 1780333690 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 84796
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
130 DIVISION ST, Derby, CT 06418
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Benjamin Nicholas Anton Larsen Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Benjamin Larsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Griffin Faculty Physicians, Inc.
16 mi
Thoracic Surgery (Cardiothoracic Vascular Surgery)
67 MAPLE AVE, 2ND FLOOR
Derby, CT 06418
  • Reassigned Medicare billing, Connecticut enrollment
  • 190 clinicians in this Medicare group
NPI 1598755605 (203) 732-1330

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06418 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. CHRISTINA ERNST MS,RD,CDN
Dietitian, Registered
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 732-7579
STACEY LEARY RD, CDN, CNSC
Dietitian, Registered
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 732-7585
DR. DWAYNE ALANSIER HALL DNP
Nurse Practitioner
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 735-7421
DR. SYBIL CHENG D.O.
Emergency Medicine (Emergency Medical Services)
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 732-7403
PETER J. INTEGLIA CRNA
Nurse Anesthetist, Certified Registered
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 735-6493
RORY V CONDON MSN, MA
Nurse Practitioner (Psychiatric/Mental Health)
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 887-0604
TRENT GARCIA MD
Student in an Organized Health Care Education/Training Program
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 735-7421
DOMENIC MICHAEL BIELLO JR. PHARMD
Pharmacist
130 DIVISION ST
DERBY, CT 06418
Naugatuck Valley Planning Region (203) 732-7450

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Benjamin Larsen's NPI number?

The NPI number for Benjamin Larsen is 1780333690. It was assigned to this individual provider in the NPPES registry on March 20, 2022.

Where is Benjamin Larsen located?

Benjamin Larsen practices at 130 Division St, Derby, CT 06418. The listed phone number is (203) 732-1330.

What is Benjamin Larsen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Benjamin Larsen enrolled in Medicare?

Yes. Benjamin Larsen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Benjamin Larsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Benjamin Larsen reassigns Medicare benefits to Griffin Faculty Physicians, Inc. (Derby, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Benjamin Larsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Benjamin Larsen was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.